[Bug 103863] New: Screen doesn't light up with "amdgpu.dc=1"

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Nov 23 09:37:28 UTC 2017


            Bug ID: 103863
           Summary: Screen doesn't light up with "amdgpu.dc=1"
           Product: xorg
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/AMDgpu
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: b.bellec at gmail.com
        QA Contact: xorg-team at lists.x.org

My screen doesn't light up if I start the kernel with option "amdgpu.dc=1"

Config is:
Fedora 27 + kernel 4.15.0-0.rc0.git7.1.fc28.x86_64
Radeon R9 380X
Dell U2414H

dmesg error is:
kernel: [drm:dm_logger_write [amdgpu]] *ERROR* perform_clock_recovery_sequence:
Link Training Error, could not                          get CR after 100 tries.

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